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1资料和方法1.1一般资料1995年1月～1997月10日本院儿科收治婴幼儿腹泻228例。其中男132例，女96例。平均年龄1.8岁。平均腹泻时间3.5土0.5天。发病高峰时间为每年11月至次年1月。主要表现为水样或蛋花样大便，大便常规检查无红细胞或白细胞，或仅有极少量白血球，细菌培养阴性
1 Materials and Methods 1.1 General Information January 1995 ~ January 1997 228 cases of pediatric infantile diarrhea admitted to our hospital. There were 132 males and 96 females. The average age of 1.8 years old. The average diarrhea time 3.5 soil 0.5 days. The peak incidence of every year from November to January next year. Mainly as water or egg-like stool stool routine examination without red blood cells or white blood cells, or only a very small amount of white blood cells, bacterial culture negative